:root {
  --ink: #102735;
  --ink-soft: #48616f;
  --paper: #f5fafc;
  --white: #ffffff;
  --line: #d6e6eb;
  --accent: #087b93;
  --accent-2: #3da8be;
  --deep: #092d3e;
  --shadow: 0 20px 60px rgba(9, 43, 56, .09);
  --radius: 22px;
  --shell: min(1180px, calc(100% - 44px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin: 0 auto; }
.section-pad { padding: 108px 0; }
.skip { position: fixed; left: 14px; top: -60px; padding: 10px 14px; background: var(--deep); color: #fff; z-index: 999; border-radius: 8px; }
.skip:focus { top: 14px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(219,229,233,.7);
}
.nav-wrap { height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; flex-direction: column; gap: 3px; min-width: max-content; }
.brand-main { font-size: 18px; letter-spacing: .13em; font-weight: 650; }
.brand-main em { font-style: normal; font-weight: 300; color: #78909b; }
.brand-sub { font-size: 8px; letter-spacing: .32em; color: #78909b; }
.primary-nav { display: flex; align-items: center; gap: 27px; font-size: 13px; color: #344d59; }
.primary-nav > a { position: relative; padding: 31px 0 27px; }
.primary-nav > a::after { content: ""; position: absolute; bottom: 19px; left: 0; width: 0; height: 1px; background: var(--accent); transition: width .25s ease; }
.primary-nav > a:hover::after { width: 100%; }
.primary-nav > a:hover { color: var(--accent); }
.language-switch { display: flex; align-items: center; gap: 7px; margin-left: 8px; color: #8aa0aa; }
.lang-btn { border: 0; background: none; padding: 4px 0; color: #8aa0aa; cursor: pointer; font-weight: 650; font-size: 12px; }
.lang-btn.active { color: var(--accent); }
.nav-toggle { display: none; border: 0; background: transparent; width: 42px; height: 42px; }
.nav-toggle span { display: block; width: 23px; height: 1px; background: var(--ink); margin: 7px auto; }

.hero { padding-top: 78px; background: linear-gradient(180deg,#fbfeff 0%, #f1f9fb 100%); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; min-height: 650px; gap: 32px; }
.eyebrow { margin: 0 0 18px; font-size: 10px; font-weight: 750; letter-spacing: .28em; color: var(--accent); }
.hero h1, .section-head h2, .future-copy h2, .publication-panel h2, .about-copy h2, .contact-panel h2 {
  font-family: Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: -.035em; margin: 0;
}
.hero h1 { font-size: clamp(46px, 5.4vw, 76px); line-height: .98; max-width: 790px; }
.hero-lead { color: var(--ink-soft); font-size: 17px; max-width: 640px; margin: 28px 0 34px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 50px; padding: 0 20px; border-radius: 10px; font-size: 13px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 14px 34px rgba(8,123,147,.22); }
.btn-primary:hover { background: #086a80; box-shadow: 0 16px 38px rgba(8,123,147,.27); }
.btn-ghost { border: 1px solid #afcad3; background: #fff; }
.btn-ghost:hover { border-color: var(--accent-2); background: #f1fafc; }
.hero-principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; max-width: 620px; }
.hero-principles > div { display: flex; gap: 12px; align-items: flex-start; }
.hero-principles p { margin: 0; color: #6c8089; font-size: 12px; line-height: 1.45; }
.hero-principles strong { color: #284652; font-weight: 700; }
.mini-icon { width: 31px; height: 31px; border-radius: 50%; border: 1px solid #bcd0d6; display: grid; place-items: center; color: var(--accent); font-size: 9px; font-weight: 800; flex: 0 0 auto; }
.hero-visual { position: relative; min-height: 590px; color: var(--accent); }
.network { position: absolute; inset: 0; width: 100%; height: 100%; filter: drop-shadow(0 25px 50px rgba(12,96,117,.08)); }
.orb { position: absolute; border-radius: 50%; filter: blur(1px); }
.orb-one { width: 260px; height: 260px; right: 15%; top: 16%; background: radial-gradient(circle at 35% 35%, rgba(61,168,190,.23), rgba(61,168,190,0)); }
.orb-two { width: 180px; height: 180px; left: 16%; bottom: 12%; background: radial-gradient(circle, rgba(8,123,147,.12), rgba(8,123,147,0)); }
.visual-label { position: absolute; font-size: 9px; letter-spacing: .34em; line-height: 1.8; color: #64828f; }
.visual-label-a { right: 2%; top: 15%; }
.visual-label-b { left: 6%; bottom: 13%; }

.manifesto { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.manifesto-grid { display: grid; grid-template-columns: 240px 1fr; gap: 70px; padding: 48px 0; align-items: start; }
.manifesto-grid .eyebrow { margin-top: 8px; }
.manifesto-copy { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(24px, 3.2vw, 39px); line-height: 1.18; max-width: 870px; }

.section-head { display: grid; grid-template-columns: 1fr .85fr; gap: 80px; align-items: end; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(38px, 4.4vw, 58px); line-height: 1.02; }
.section-head > p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.project-card { --card-accent: var(--accent); --card-tint: #f0f9fb; --card-line: #afd5de; position: relative; display: flex; flex-direction: column; min-height: 435px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.project-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--card-accent), transparent 78%); opacity: .82; }
.project-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--card-line); }
.project-card.featured { background: linear-gradient(155deg,#fbfeff,#eff9fc); }
.card-nars { --card-accent: #087e9b; --card-tint: #edf8fc; --card-line: #a5cfdd; }
.card-prews { --card-accent: #626da7; --card-tint: #f4f4fc; --card-line: #c8cbe8; }
.card-health { --card-accent: #27836f; --card-tint: #eff9f5; --card-line: #acd5c9; }
.card-airs { --card-accent: #a97831; --card-tint: #fdf8ef; --card-line: #e7d0a7; }
.card-tars { --card-accent: #087d8d; --card-tint: #eaf9fa; --card-line: #a6d4dc; }
.project-index { font-size: 10px; letter-spacing: .2em; color: #9aaeb6; }
.project-mark { width: 70px; height: 70px; border-radius: 50%; display: grid; place-items: center; margin: 40px 0 30px; font-family: Georgia,serif; font-size: 30px; border: 1px solid var(--card-line); color: var(--card-accent); background: var(--card-tint); }
.mark-prews { border-radius: 18px; }
.mark-health { border-radius: 24px 8px 24px 8px; }
.mark-airs { border-radius: 8px 24px 8px 24px; }
.mark-tars { border-radius: 24px 8px 24px 8px; }
.status { font-size: 9px; font-weight: 800; letter-spacing: .19em; color: var(--card-accent); margin: 0 0 7px; }
.project-card h3 { margin: 0; font-family: Georgia,serif; font-size: 29px; font-weight: 400; letter-spacing: -.02em; }
.project-sub { color: #6c828b; margin: 3px 0 18px; font-size: 12px; }
.project-description { color: var(--ink-soft); font-size: 14px; line-height: 1.7; margin: 0 0 22px; }
.project-stage { padding: 16px 17px; margin: 0 0 22px; background: var(--card-tint); border-left: 2px solid var(--card-accent); }
.project-stage span { display: block; font-size: 9px; font-weight: 800; letter-spacing: .15em; color: #65828d; margin-bottom: 8px; }
.project-stage p { margin: 0; font-size: 12px; line-height: 1.6; color: var(--ink-soft); }
.tars-card { grid-column: 1 / -1; min-height: 385px; background: linear-gradient(150deg,#fff 25%,#effafb); }
.tars-card .project-body { max-width: 850px; }
.tars-card .project-mark { margin: 22px 0 20px; }
.project-foot { margin-top: auto; border-top: 1px solid var(--line); padding-top: 18px; display: flex; align-items: center; justify-content: space-between; gap: 18px; font-size: 10px; letter-spacing: .08em; color: #657d87; text-transform: uppercase; }

.soft-section { background: var(--paper); border-top: 1px solid #edf2f4; border-bottom: 1px solid #edf2f4; }
.area-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.area { padding: 34px 28px 38px 0; margin-right: 28px; border-right: 1px solid var(--line); }
.area:last-child { border-right: 0; }
.area > span { display: inline-block; color: var(--accent); font-size: 28px; margin-bottom: 36px; }
.area h3 { margin: 0 0 12px; font-family: Georgia,serif; font-size: 22px; font-weight: 400; }
.area p { margin: 0; color: var(--ink-soft); font-size: 13px; }

.future-section { background: #fff; }
.future-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: start; }
.future-copy h2 { font-size: clamp(38px,4vw,58px); line-height: 1.04; max-width: 620px; }
.future-copy > p:last-child { color: var(--ink-soft); max-width: 650px; margin-top: 26px; }
.future-list { border-top: 1px solid var(--line); }
.future-list > div { display: grid; grid-template-columns: 52px 1fr; gap: 12px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.future-list > div > span { font-size: 10px; color: var(--accent); letter-spacing: .18em; }
.future-list p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.future-list strong { color: var(--ink); font-family: Georgia,serif; font-size: 20px; font-weight: 400; }

.publication-section { padding-top: 40px; }
.publication-panel { background: linear-gradient(145deg,#eff6f8,#f8fbfc); border: 1px solid #dfebee; border-radius: 30px; padding: 58px 62px; display: grid; grid-template-columns: 1fr 1fr; gap: 72px; }
.publication-panel h2 { font-size: clamp(34px,3.7vw,50px); line-height: 1.05; }
.pub-copy p { margin: 0; color: var(--ink-soft); }
.pub-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.pub-tags span { border: 1px solid #c9dce1; background: rgba(255,255,255,.68); border-radius: 999px; padding: 8px 12px; font-size: 11px; color: #4f6a75; }

.about-section { padding-bottom: 120px; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; border-top: 1px solid var(--line); padding-top: 62px; }
.about-copy h2 { font-size: clamp(38px,4vw,55px); line-height: 1.05; }
.about-text { color: var(--ink-soft); font-size: 15px; }
.about-text p { margin: 0 0 20px; }

.contact-section { background: var(--deep); color: #fff; }
.contact-panel { min-height: 330px; display: flex; align-items: center; justify-content: space-between; gap: 70px; }
.eyebrow.light { color: #92c3cf; }
.contact-panel h2 { font-size: clamp(38px,4.5vw,58px); max-width: 730px; line-height: 1.02; }
.contact-panel p:not(.eyebrow) { color: #b8cbd1; max-width: 720px; margin-top: 22px; }
.btn-light { background: #fff; color: var(--deep); flex: 0 0 auto; }
.site-footer { background: #061e27; color: #b5c8ce; padding: 38px 0; border-top: 1px solid rgba(255,255,255,.08); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 50px; align-items: center; }
.footer-brand .brand-main { color: #fff; font-size: 14px; }
.footer-brand .brand-main em { color: #92abb4; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 11px; }
.footer-meta { display: flex; flex-direction: column; gap: 7px; align-items: flex-end; font-size: 10px; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .primary-nav { display: none; position: absolute; left: 0; right: 0; top: 84px; background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line); padding: 22px; flex-direction: column; align-items: flex-start; gap: 4px; }
  .primary-nav.open { display: flex; }
  .primary-nav > a { padding: 12px 0; width: 100%; }
  .primary-nav > a::after { bottom: 8px; }
  .language-switch { margin: 10px 0 0; }
  .hero-grid, .future-grid, .publication-panel, .about-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 440px; }
  .section-head { grid-template-columns: 1fr; gap: 18px; }
  .project-grid { grid-template-columns: 1fr; }
  .tars-card { grid-column: auto; }
  .project-card { min-height: 360px; }
  .area-grid { grid-template-columns: 1fr 1fr; }
  .area:nth-child(2) { border-right: 0; }
  .future-grid { gap: 55px; }
  .publication-panel { gap: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .footer-meta { align-items: flex-start; }
}

@media (max-width: 640px) {
  :root { --shell: min(100% - 28px, 1180px); }
  .section-pad { padding: 78px 0; }
  .nav-wrap { height: 72px; }
  .primary-nav { top: 72px; }
  .brand-main { font-size: 15px; }
  .brand-sub { font-size: 6.5px; }
  .hero { padding-top: 55px; }
  .hero-grid { min-height: auto; }
  .hero h1 { font-size: 47px; }
  .hero-lead { font-size: 15px; }
  .hero-principles { grid-template-columns: 1fr; }
  .hero-visual { min-height: 330px; }
  .manifesto-grid { grid-template-columns: 1fr; gap: 8px; padding: 34px 0; }
  .section-head { margin-bottom: 34px; }
  .area-grid { grid-template-columns: 1fr; }
  .area { border-right: 0; border-bottom: 1px solid var(--line); margin-right: 0; padding-right: 0; }
  .area:last-child { border-bottom: 0; }
  .publication-panel { padding: 36px 24px; border-radius: 22px; }
  .contact-panel { min-height: 420px; align-items: flex-start; justify-content: center; flex-direction: column; padding: 74px 0; }
  .btn-light { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}